Taco question (15hr day)

Coffeeholic:
Legal

You could take 24 hours rest and resume work as long as you started another 45-hour rest before midnight Sunday. You could take 45 and resume work on Thursday without having to start another weekly rest before midnight Sunday. However, in both scenarios you could only do other work as you would not be able to do any more driving under EU rules until midnight Sunday having used the 90 hours allowed for the fortnight.

Dont understand what your saying
is the above formula correct or not?